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High Speed Projectile Impact for Mining and Tunneling - Project Ream.

Authors
Watson-JD; Lundquist-RG
Source
NTIS: PB/271-143 Available for Reference At Bureau Libraries :93 pages
Link
NIOSHTIC No.
10001604
Abstract
Results of extensive field tests of a new and powerful method of hard rock excavation are presented in this report. The method, known by the acronym ream (rapid excavation and mining), employs high velocity, smooth bore cannons to efficiently deliver energy to the rock, and it has been demonstrated for underground tunneling, drilling, surface benching, scaling, and secondary breakage in hard granitic rock at the Hope Valley Mine test site in California.
Publication Date
19740101
Document Type
CP; Final Contract Report;
Fiscal Year
1974
NTIS Accession No.
PB-271143
NTIS Price
A06
Identifying No.
OFR 125-77
NIOSH Division
TCRC;
Source Name
NTIS: PB/271-143 Available for Reference At Bureau Libraries
State
CA;
Performing Organization
Physics Int'l. Company
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